<div class="selectitem-div">
<p-dropdown [options]="groupedProvinceCityCounty" [(ngModel)]="adcd" [style]="{'width':'150px'}" placeholder="行政区划" [group]="true">
    <ng-template let-group pTemplate="group">
        <span style="vertical-align:middle">{{group.label}}</span>
    </ng-template>
</p-dropdown>
</div>